diff --git a/apps/web/src/server/aws/ses.ts b/apps/web/src/server/aws/ses.ts
index 3c669e8..c6050a9 100644
--- a/apps/web/src/server/aws/ses.ts
+++ b/apps/web/src/server/aws/ses.ts
@@ -123,6 +123,7 @@ export async function sendRawEmail({
   unsubUrl,
   isBulk,
   inReplyToMessageId,
+  emailId,
 }: Partial<EmailContent> & {
   region: string;
   configurationSetName: string;
@@ -134,6 +135,7 @@ export async function sendRawEmail({
   unsubUrl?: string;
   isBulk?: boolean;
   inReplyToMessageId?: string;
+  emailId?: string;
 }) {
   const sesClient = getSesClient(region);
 
@@ -155,6 +157,7 @@ export async function sendRawEmail({
       bcc,
       headers: {
         "X-Entity-Ref-ID": nanoid(),
+        ...(emailId ? { "X-Unsend-Email-ID": emailId } : {}),
         ...(unsubUrl
           ? {
               "List-Unsubscribe": `<${unsubUrl}>`,
diff --git a/apps/web/src/server/service/email-queue-service.ts b/apps/web/src/server/service/email-queue-service.ts
index 7a72eb1..cd11dec 100644
--- a/apps/web/src/server/service/email-queue-service.ts
+++ b/apps/web/src/server/service/email-queue-service.ts
@@ -381,6 +381,7 @@ async function executeEmail(job: QueueEmailJob) {
       unsubUrl,
       isBulk,
       inReplyToMessageId,
+      emailId: email.id,
     });
 
     logger.info(
diff --git a/apps/web/src/server/service/ses-hook-parser.ts b/apps/web/src/server/service/ses-hook-parser.ts
index aaee8c4..829d679 100644
--- a/apps/web/src/server/service/ses-hook-parser.ts
+++ b/apps/web/src/server/service/ses-hook-parser.ts
@@ -32,12 +32,39 @@ export async function parseSesHook(data: SesEvent) {
 
   const mailData = getEmailData(data);
 
-  const email = await db.email.findUnique({
+  let email = await db.email.findUnique({
     where: {
       sesEmailId,
     },
   });
 
+  // Handle race condition: If email not found by sesEmailId, try to find by custom header
+  if (!email) {
+    const emailIdHeader = data.mail.headers.find(
+      (h) => h.name === "X-Unsend-Email-ID"
+    );
+
+    if (emailIdHeader?.value) {
+      email = await db.email.findUnique({
+        where: {
+          id: emailIdHeader.value,
+        },
+      });
+
+      // If found, update the sesEmailId to fix the missing reference
+      if (email) {
+        await db.email.update({
+          where: { id: email.id },
+          data: { sesEmailId },
+        });
+        logger.info(
+          { emailId: email.id, sesEmailId },
+          "Updated email with sesEmailId from webhook (race condition resolved)"
+        );
+      }
+    }
+  }
+
   logger.setBindings({
     sesEmailId,
     mailId: email?.id,